1. From the Departments of Cardiology (Children’s Hospital) and Pediatrics (Harvard Medical School) (W.T., M.E.v.d.V., A.C.M., G.R.M., S.D.C., J.E.L., S.B.P.); Department of Surgery, Children’s Hospital and Harvard Medical School (R.W.J.); Department of Obstetrics and Gynecology, Brigham and Women’s Hospital and Harvard Medical School (L.W.-H.); and Department of Radiology, Brigham and Women’s Hospital and Harvard Medical School (C.B.B.), Boston, Mass. Dr Perry currently is at Packard Children’s...